However, accommodative lags were greater at nearer viewing distances in high myopes, causing hyperopic drift, with lag increasing by 0.3 D on average for every additional diopter of myopia.

As rates of myopia increase around the world, investigators hunt for explanations and whether chronic hyperopic defocus is in play and whether too much time spent indoors is altering eye development.

Myopic macular degeneration affects people with severe myopia, which is an eyeglass prescription of -6 diopters or more. The risk is even greater for prescriptions of -10 diopters or more.

Myopia, or nearsightedness, is a vision condition where close objects look clear but far objects look blurry. This occurs when the shape of the eye causes light rays to bend and focus in front of ...

Childhood myopia, or nearsightedness, is growing rapidly in the U.S. and around the world. Researchers say kids who spend two hours outside every day, are less likely to develop the condition.